Updated git submodules

Project: integration/packaging master 2ac8721b4cbf546df5d59ddad46ed68db070bdfb

Make Packer docker_repo vary by OS

We have DockerHub repos opendaylight/odl for CentOS (main OS) and
opendaylight/fedora for Fedora. With the docker_repo var in ODL var
file, it required a manual `docker tag` to push Fedora images to the
right repo. Making it vary by OS is more correct, avoids this step.

Change-Id: Ibcdfa2d509427652ac6096104e883316c2c54905
Signed-off-by: Daniel Farrell <dfarrell@redhat.com>

diff --git a/docs/submodules/integration/packaging b/docs/submodules/integration/packaging
index 8b7d75a522bf63e498c598fc790a3971a3cc4a36..2ac8721b4cbf546df5d59ddad46ed68db070bdfb 160000 (submodule)
--- a/docs/submodules/integration/packaging
+++ b/docs/submodules/integration/packaging
@@ -1 +1 @@
-Subproject commit 8b7d75a522bf63e498c598fc790a3971a3cc4a36
+Subproject commit 2ac8721b4cbf546df5d59ddad46ed68db070bdfb